feat: license file search (#4327)

Signed-off-by: Keith Zantow <kzantow@gmail.com>

syft/pkg/cataloger/swipl/package.go

@@ -1,17 +1,21 @@
 package swipl
 
 import (
+	"context"
+
 	"github.com/anchore/packageurl-go"
 	"github.com/anchore/syft/syft/file"
 	"github.com/anchore/syft/syft/pkg"
+	"github.com/anchore/syft/syft/pkg/cataloger/internal/licenses"
 )
 
-func newSwiplPackPackage(m pkg.SwiplPackEntry, locations ...file.Location) pkg.Package {
+func newSwiplPackPackage(ctx context.Context, resolver file.Resolver, m pkg.SwiplPackEntry, locations ...file.Location) pkg.Package {
 	p := pkg.Package{
 		Name:      m.Name,
 		Version:   m.Version,
 		PURL:      swiplpackPackageURL(m.Name, m.Version),
 		Locations: file.NewLocationSet(locations...),
+		Licenses:  pkg.NewLicenseSet(licenses.FindRelativeToLocations(ctx, resolver, locations...)...),
 		Type:      pkg.SwiplPackPkg,
 		Language:  pkg.Swipl,
 		Metadata:  m,

syft/pkg/cataloger/swipl/parse_pack.go

@@ -12,7 +12,7 @@ import (
 	"github.com/anchore/syft/syft/pkg/cataloger/generic"
 )
 
-func parsePackPackage(_ context.Context, _ file.Resolver, _ *generic.Environment, reader file.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
+func parsePackPackage(ctx context.Context, resolver file.Resolver, _ *generic.Environment, reader file.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
 	var pkgs []pkg.Package
 
 	nameRe := regexp.MustCompile(`name\(\s*'?([^')]+)'?\s*\)`)
@@ -61,6 +61,8 @@ func parsePackPackage(_ context.Context, _ file.Resolver, _ *generic.Environment
 	pkgs = append(
 		pkgs,
 		newSwiplPackPackage(
+			ctx,
+			resolver,
 			entry,
 			reader.WithAnnotation(pkg.EvidenceAnnotationKey, pkg.PrimaryEvidenceAnnotation),
 		),